Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 141, NWS Twin Cities, MN

June 18, 2001Chisago County, Isanti County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 2001, 5:30 AM CDT for Chisago County, Isanti County, Minnesota. It was in force for 60 min. 3 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Jun 18, 2001, 5:30 AM CDT (10:30 UTC)
Expired
Jun 18, 2001, 6:30 AM CDT
In force
60 min
Issued by
NWS Twin Cities, MN
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Chisago County, MN, Isanti County, MN

What was reported inside it

TimeReportWhereRemark
Jun 18, 5:50 AM CDTHail 1.25Cambridge, MNNumerous cars damaged.
Jun 18, 6:05 AM CDTHail 2.75Rush City, MNNinety percent of homes in town received damage. Hundreds of broken windows. Siding, roofs and vehicles damaged by wind driven hail.
Jun 18, 6:10 AM CDTThunderstorm Wind 70 ERush City, MNRoof ripped off pole barn. Siding torn from garage, and then blown onto truck. Trees toppled on to two pickup trucks.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 18, 5:15 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.5 hours before the alert went out and 89 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2001-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2001-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
38 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
1536 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
289 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

657 
WUUS53 KMPX 181030
SVRMSP
MNC025-059-181115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
530 AM CDT MON JUN 18 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHISAGO COUNTY IN EAST CENTRAL MINNESOTA
  ISANTI COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 630 AM CDT

* AT 528 AM CDT...RADAR INDICATED A LARGE AREA OF SEVERE STORMS
  FROM MORA TO PRINCETON.  LARGE HAIL AND DAMAGING WINDS ARE
  POSSIBLE. THE STORMS WERE MOVING EAST AT 25 MPH... WHILE OTHER
  SEVERE STORMS WERE DEVELOPING TO THE SOUTHEAST.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  BRAHAM.
  CAMBRIDGE.
  RUSH CITY.
  NORTH BRANCH.
  ISANTI.
  HARRIS.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4571 9350 4541 9349 4542 9269 4556 9291
          4573 9289
$$
TDK

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 7:11 PM CDTSevere Thunderstorm WarningMPXGoodhue49 min
Jun 17, 7:46 PM CDTSevere Thunderstorm WarningMPXDakota, Washington44 min
Jun 18, 3:08 AM CDTSevere Thunderstorm WarningMPXTodd52 min
Jun 18, 4:36 AM CDTSevere Thunderstorm WarningMPXMorrison39 min
Jun 18, 4:55 AM CDTSevere Thunderstorm WarningMPXMille Lacs50 min
Jun 18, 5:03 AM CDTSevere Thunderstorm WarningMPXBenton42 min
Jun 18, 5:11 AM CDTSevere Thunderstorm WarningMPXKanabec49 min
Jun 18, 6:15 AM CDTSevere Thunderstorm WarningMPXWashington45 min
Jun 18, 6:20 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod40 min
Jun 18, 6:20 AM CDTSevere Thunderstorm WarningMPXRenville40 min
Jun 18, 6:41 AM CDTSevere Thunderstorm WarningMPXBrown, Nicollet49 min
Jun 18, 6:41 AM CDTSevere Thunderstorm WarningMPXSibley49 min
Jun 18, 7:05 AM CDTSevere Thunderstorm WarningMPXMcLeod25 min
Jun 18, 7:23 AM CDTSevere Thunderstorm WarningMPXCarver, Scott52 min
Jun 18, 6:11 PM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.